Improvement in grain-separators



H. B. THOMAS,

Grain SeparatorlA Patented July 14, 1863.

N, PETERS. Mbihomphlr, Whington. D. Cv

UNITED. *f STATES- .PATENT,A OFFICE..-

HENRY B. THOMAS, OF CASCADFLIOVVA..

IMPROVEMENT IN GRAIN-SEPARATORS.

Specification forming part of Letters Patent No. 39,262,V dated July 14,18163.

To all whomit may concern:

Be it known that I, HENRY B. THOMAS, of Cascade, Dubuque county, Iowa,have invented a new and useful Improvement in Grain-separators; and l dohereby declare the following to be a full, clear, and exact descriptionof the same, the annexed drawings forming a part hereof.

Figure l is a perspective view of the separator. Fig. 2 is a transversesectional elevation of the same.

Like letters of reference indicate like parts in the two figures.

The object of'my invention is to seprate oats from wheat or other shortgrain 5 also, to remove cockle broken grains, and other foreign matterfrom the pure grain 5 and it consists in the peculiar construction andarrangement of the parts, as hereinafter described.

A is the base of the apparatus. B B are uprights which support inappropriate bearings the square revolving separator C. The separatorconsists of a central shaft, a, having journals resting in uprights B,and two sets of radial arms, b, which terminate in the corners of thesquare inner case, F. This inner'case is four-square and its sides areperforated throughout with numerous small holes i, about one-fourth ofan inch in diameter. Surrounding the inner case, F, a second case, G, isformed, leaving a space, h, of about oneourth of an inch on all sidesbetween the sides of F and G. Thecase G is not perforated, but isconstructed with longitudinal openings c at each of the four corners,asv

shown. It is, moreover, lined with fine wirecloth d, as represented, fora purpose to be explained. Surrounding 'the case G, and at H, does notextend to the end piece, J, but an opening, k, is afforded by whichclean grain escapes from within the screen into an appropriatereceptacle. The central shaft carries a pulley, j, by which motion iscommunicated to the separator.

The apparatuswhen in use is mounted in an inclined position, so that thegrain received at one end gradually works toward the other.

The motion is slow, and the operation of the apparatus is as follows:The grain to be separated is admitted into the central area through theopening e. As the apparatus revolves slowly, causing the grain to slideor shift from one corner of the central Vspace to another by its owngravity, a portion enters the apertures t endwise. The short grainsuchas wheat-passes. entirely through the apertures, and falls into thespace h, between the cases F and G, but the long grain-such asoats-being arrested by the inner face of G- 'cannot penetrate far enoughto fall into the space, but is held in the apertures until the separatorrevolves halfaround, when it falls back into the central space towardthe discharge end of the apparatus. If the grains again enter theapertures, they are again held as before, and when carried around fallback into the central area, still nearer the discharge end, until theyfinally escape therefrom. The 'wire-cloth lining d serves to hold thelong grains, whose ends are thrust into its meshes, from sliding downobliquely from the apertures into the intermediate space h. The wheat,together with cockle and other impurities, is discharged from space hthrough the longitudinal apertures c into the space g, inclosed by theouter case or screen, H. Here the small seeds and imperfect grains ofwheat pass through the meshes of the screen and escape, while the purewheat passes on by the inclination of the screen, and is finallydischarged through the openings k into an appropriate receptacle.

Having fully described my invention and its mode of operation, what Iclaim as new, and desire to secure by Letters Patent, is the following:

I do not claim the use of one perforate cylinder within another forcleaning and separating different grains from eachother; nor do Iseparating different ,grains-7 substantially in I cla-im, nor usecylinders for olea-ning grain; the manner and for the purpose hereinsei; but forth.

What I claim as my invention, and desire to secure by Letters Patent,is- H' B' THOMAS' Two or more concentric cubical vessels or Witnesses:wiboxes, the inner one 'perforates and the outer W. S. HALL, coveredwith Wire-gauze or its equivalent, for A. C. THOMAS.

N Jf'

